Public-data lookups
BR + US public-data sources accessible to agents — Brazilian Receita Federal (CNPJ), US universal identifiers, and others. Each entry is a Capability record at data/capabilities/<slug>.yml served via an mcp-gov-class MCP server.
5 public-data lookups indexed.
Auxiliar.ai CNPJ fetch (BrasilAPI → CNPJ.ws cascade)
Drop-in CNPJ lookup. Returns razão social, primary + secondary CNAEs, regime tributário (Simples Nacional + MEI flags), situação cadastral, full address, QSA. Cascades BrasilAPI → CNPJ.ws on error. One auth surface for the rest of the auxiliar.ai gateway's 220+ Brazilian public-data tools.
BrasilAPI: CNPJ lookup
Free public CNPJ lookup at https://brasilapi.com.br/api/cnpj/v1/{cnpj} — no auth, no token, drop-in HTTP GET. Returns razao_social, nome_fantasia, CNAE fiscal + secondary CNAEs, opção pelo Simples + MEI, situação cadastral, full address, sócios. Data from Receita Federal open data dumps via MinhaReceita.
CNPJ.ws: free + commercial CNPJ lookup
Brazilian CNPJ lookup with free 3 req/min public tier (publica.cnpj.ws) and paid 2000 req/min commercial tier. Sources from Receita Federal + Sintegra + Suframa — deeper field coverage than peers (Inscrições Estaduais, branches/filiais, sócios, MEI/Simples flags, full address). Best when bookkeeping needs state registrations.
CNPJá: CNPJ lookup (free cached + paid real-time)
Brazilian CNPJ lookup with two tiers: open.cnpja.com (free, cached daily, no auth) and api.cnpja.com (paid, real-time against Receita Federal, token auth, higher rate limits). Distinguishing feature versus BrasilAPI / CNPJ.ws is the paid real-time tier — situação cadastral changes hit within minutes, not the ~30-day data-dump lag.
ReceitaWS: CNPJ lookup
Long-running Brazilian CNPJ lookup API at https://receitaws.com.br/v1/cnpj/{cnpj}. Free public tier rate-limited to 3 req/min; paid premium tier with token unlocks higher throughput. Returns razao_social, atividade_principal (CNAE), atividades secundárias, situação, address. Simples Nacional flag is a paid-tier field.